Home / 12,321,641.20-18,478,531.06-4,232,666.28

Finding the Fourth Proportional to 12,321,641.20, 18,478,531.06 and 4,232,666.28

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Solution

The fourth proportional to 12,321,641.20, 18,478,531.06 and 4,232,666.28 is: 6,347,649.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321,641.20 : 18,478,531.06 = 4,232,666.28 : x
  2. Step 2: Convert to fraction form
    12,321,641.20/18,478,531.06 = 4,232,666.28/x
  3. Step 3: Cross multiply
    12,321,641.20x = 18,478,531.06 × 4,232,666.28
  4. Step 4: Simplify right side
    12,321,641.20x = 78,213,455,321,594.66
  5. Step 5: Solve for x
    x = 78,213,455,321,594.66/12,321,641.20
  6. Step 6: Final answer
    x = 6,347,649.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.